How to use the @ephox/snooker.TableLookup.cell function in @ephox/snooker

const handle = function (event: KeyboardEvent, editor: Editor, actions: TableActions, lazyWire) {
  if (event.keyCode === VK.TAB) {
    const body = Util.getBody(editor);
    const isRoot = function (element) {
      const name = Node.name(element);
      return Compare.eq(element, body) || Arr.contains(rootElements, name);
    };

    const rng = editor.selection.getRng();
    if (rng.collapsed) {
      const start = Element.fromDom(rng.startContainer);
      TableLookup.cell(start, isRoot).each(function (cell) {
        event.preventDefault();
        const navigation: any = event.shiftKey ? backward : forward;
        const rng = navigation(editor, isRoot, cell, actions, lazyWire);
        rng.each(function (range) {
          editor.selection.setRng(range);
        });
      });
    }
  }
};